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Idea of macro-scale and micro-scale prestressed ceramics

Interdisciplinary materials 2024年第6期3卷 897-906页

作者： Junfeng Gu Shuai Fu Hang Ping Wei Ji Ji Zou Hao Wang Weimin Wang Fan Zhang Hanxing Liu Zhengyi Fu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhanChina School of Materials Science and Engineering Wuhan University of TechnologyWuhanChina

The brittleness of ceramics restricts their engineering *** is promising to solve the problem,yet still lacks enough attention and ex-tensive *** work proposes the idea of macro-scale and micro-scale prestressed ceramics:to form compressive prestress in macro-or micro-scale range in the ceramics by designed additional force,which offsets the fracture stress at the crack tips,then enhances the strength of *** macro-scale prestressed ceramic has a designed long-range ordering stress distribution in a large scale,similar to the reinforced concrete and tempered *** micro-scale ceramic has a designed short-range ordered stress dis-tribution,similar to that in the natural *** constructing the macro-scale and micro-scale prestressed ceramics are *** research interests and challenges are prospected for developing the mechan-ical properties of ceramics.

关键词： macro-scale micro-scale prestressed ceramics strength

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Cobalt doping boosted electrocatalytic activity of CaMn3O6 for hydrogen evolution reaction

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Nano Research 2022年第4期15卷 2870-2876页

作者： Qun Li Kaisi Liu Siwei Gui Jiabin Wu Xiaogang Li Zaifang Li Hongrun Jin Hui Yang Zhimi Hu Wenxi Liang Liang Huang Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China China-Australia Institute for Advanced Materials and Manufacturing Jiaxing UniversityJiaxing 314001China State Key Laboratory of Material Processing and Die&Mold Technology Department of MechanicsSchool of Aerospace EngineeringHuazhong University of Science and TechnologyWuhan 430074China

The development of earth-abundant-metal-based electrocatalysts with high efficiency and long-term stability for hydrogen evolution reaction(HER)is crucial for the clean and renewable energy ***,we report a molten-salt method to synthesize Co-doped CaMn_(3)O_(6)(CMO)nanowires(NWs)as effective electrocatalyst for *** as-obtained CaMn_(3-x)Co_(x)O_(6)(CMCO)exhibits a small onset overpotential of 70 mV,a required overpotential of 140 mV at a current density of 10 mA·cm^(-2),a Tafel slope of 39 mV·dec^(-1)in 0.1 M HClO_(4),and a satisfying long-term *** characterizations combined with density functional theory(DFT)calculations demonstrate that the obtained HER performance can be attributed to the Co-doping which altered CMO’s surface electronic structures and *** the simplicity of synthesis route and the abundance of the pertinent elements,the synthesized CMCO shows a promising prospect as a candidate for the development of earth-abundant,metal-based,and cost-effective electrocatalyst with superior HER *** results also establish a strategy of rational design and construction of novel electrocatalyst toward HER by tailoring band structures of transition metal oxides(TMOs).

关键词： CMCO nanowires hydrogen evolution reaction electronic structure dopant

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FeNi@CNS nanocomposite as an efficient electrochemical catalyst for N_(2)-to-NH_(3) conversion under ambient conditions

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Journal of materials Science & technology 2022年第8期103卷 59-66页

作者： Tayiba Ilyas Fazal Raziq Nasir Ilyas Liuxin Yang Sharafat Ali Amir Zada Syedul Hasnain Bakhtiar Yong Wang Huahai Shen Liang Qiao School of Physics University of Electronic Science and Technology of ChinaChengdu 610054China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 10084China Department of Chemistry Abdul Wali Khan University of MardanMardanKPK 23200Pakistan Laboratory of Living Materials at the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Institute of Nuclear Physics and Chemistry Chinese Academy of Engineering PhysicsMianyang 621900China

The electrocatalytic nitrogen reduction reaction(NRR)has emerged as a promising renewable energy source and a feasible strategy as an alternative to Haber-Bosch ammonia(NH_(3))***,finding an efficient and cost-effective robust catalyst to activate and cleave the extremely strong triple bond in nitrogen(N_(2))for electrocatalytic NRR is still a ***,a FeNi@CNS nanocomposite as an efficient catalyst for N_(2) fixation under ambient conditions is *** FeNi@CNS nanocomposite was prepared by a simple water bath process and *** FeNi@CNS is demonstrated to be a highly efficient NRR catalyst,which exhibits better NRR performance with exceptional Faradaic efficiency of 9.83%and an NH_(3) yield of 16.52μg h^(−1) cm^(−2) in 0.1 M Na_(2)SO_(4) aqueous ***,high stability and reproducibility with consecutive 6 cycles for two hours are also demonstrated throughout the NRR electrocatalytic process for 12 ***,the FeNi@CNS catalyst encourages N_(2) adsorption and activation as well as effectively suppressing competitive ***,this earth-abundant FeNi@CNS catalyst with a subtle balance of activity and stability has excellent potential in NRR industrial applications.

关键词： Electrocatalytic nitrogen reduction Transition-metal alloy FeNi@CNS catalyst N_(2)fixation to NH_(3)

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Bioprocess-inspired preparation of silica with varied morphologies and potential in lithium storage

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Journal of materials Science & technology 2021年第13期72卷 61-68页

作者： Fuqiang Wan Wenxuan Wang Zhaoyong Zou Hao Xie Hang Ping Zhengyi Fu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan430070China School of Chemistry Chemical Engineeringand Life ScienceWuhan University of TechnologyWuhan430070China

As one of the most delicate bioprocesses in nature,biosilicification is closely related to biosilica with various morphologies,and has provided abundant inspiration to materials *** the present study,to explore the biosilica formation process and fabricate silica with an exquisite microstructure for lithiumion battery(LIB)electrodes,a bacterial phage(M13)is used as a biotemplate to synthesize silica with diverse morphologies:cylinders,hexagonal prisms,assemblies of smaller cylinders and nanowires.A facile ethanol bath method is conducted to coat the nanowires with nitrogen-containing carbon and carbon-coated SiO_(2) nanowires with mesochannels(C@msSiO_(2) NWs)are first used as anode materials for *** to the uniform carbon coating and parallel mesochannel structure,the electronic conductivity and capacity to accommodate volume variations were significantly *** the electrochemical perfo rmance test,the composites calcined at 750℃(C@msSiO_(2) NWs-750)show an impressive capacity of 653 mA h g^(-1) at a current density of 500 mA g^(-1) and stability(1000 cycles).In view of the electrochemical test outcomes,the prepa ration of a sophisticated structure with an outstanding potential is easily achieved via a biomimetic strategy.

关键词： Biomimetic preparation Biosilicification M13 phage Silica nanowires Mesochannel

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Cost Effectivities Analysis of Perovskite Solar Cells: Will it Outperform Crystalline Silicon Ones?

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Nano-Micro Letters 2025年第09期 345-355页

作者： Yingming Liu Ziyang Zhang Tianhao Wu Wenxiang Xiang Zhenzhen Qin Xiangqian Shen Yong Peng Wenzhong Shen Yongfang Li Liyuan Han State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University Materials Genome Institute Shanghai University Xinjiang Key Laboratory of Solid State Physics and Devices School of Physical Science and Technology Xinjiang University State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Institute of Solar Energy Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education) School of Physics and AstronomyShanghai Jiao Tong University Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences

The commercialization of perovskite solar cells（PSCs） has garnered worldwide attention and many efforts were devoted on the improvement of efficiency and stability. Here,we estimated the cost effectivities of PSCs based on the current industrial condition. Through the analysis of current process, the manufacturing cost and the levelized cost of electricity（LCOE）of PSCs is estimated as 0.57 $ W-1and 18–22 US cents（kWh）-1, respectively, and we demonstrate the materials cost shares 70% of the total *** analysis indicates that the improve- ment of efficiency, yield and decrease in materials cost significantly reduce the cost of the modules. Analysis of the module cost and LCOE indicates that the PSCs have the potential to outperform the silicon solar cells in the condition of over 25% efficiency and 25-year lifetime in future. To achieve this target, it is essential to further refine the fabrication processes of each layer in the module, develop stable inorganic transport materials, and precisely control material formation and processing at the microscale and nanoscale to enhance charge transport.

关键词：

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High Conduction Band Inorganic Layers for Distinct Enhancement of Electrical Energy Storage in Polymer Nanocomposites

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Nano-Micro Letters 2022年第9期14卷 221-236页

作者： Yingke Zhu Zhonghui Shen Yong Li Bin Chai Jie Chen Pingkai Jiang Xingyi Huang Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing State Key Laboratory of Metal Matrix CompositesDepartment of Polymer Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240People’s Republic of China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Center of Smart Materials and DevicesWuhan University of TechnologyWuhan 430070People’s Republic of China Institute of Applied and Physical Chemistry and Center for Environmental Research and Sustainable Technology University of Bremen28359 BremenGermany

Dielectric polymer nanocomposites are considered as one of the most promising candidates for high-power-density electrical energy storage *** nanofillers with high insulation property are frequently introduced into fluoropolymer to improve its breakdown strength and energy storage ***,inorganic nanofillers are thought to introducing traps into polymer matrix to suppress leakage ***,how these nanofillers effect the leakage current is still ***,high dopant(>5 vol%)is prerequisite for distinctly improved energy storage performance,which severely deteriorates the processing and mechanical property of polymer nanocomposites,hence brings high technical complication and ***,boron nitride nanosheet(BNNS)layers are utilized for substantially improving the electrical energy storage capability of polyvinylidene fluoride(PVDF)*** reveal that the high conduction band minimum of BNNS produces energy barrier at the interface of adjacent layers,preventing the electron in PVDF from passing through inorganic layers,leading to suppressed leakage current and superior breakdown *** by improved Young’s modulus(from 1.2 GPa of PVDF to 1.6 GPa of nanocomposite),significantly boosted discharged energy density(14.3 J cm^(-3)) and charge-discharge efficiency(75%)are realized in multilayered nanocomposites,which are 340 and 300% of PVDF(4.2 J cm^(-3),25%).More importantly,thus remarkably boosted energy storage performance is accomplished by marginal *** work offers a new paradigm for developing dielectric nanocomposites with advanced energy storage performance.

关键词： Boron nitride nanosheet Conduction band Efficiency Energy density Barrier

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Deformation mechanisms in aβ-quenched Ti-5321 alloy:In-situ investigation related to slip activity,orientation evolution and stress induced martensite

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Journal of materials Science & technology 2022年第17期112卷 36-48页

作者： Cong Wu Qinyang Zhao Shixing Huang Yongqing Zhao Lei Lei Junqiang Ren Qiaoyan Sun Lian Zhou State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong UniversityXi’an 710049China School of Material Science and Engineering Chang'an UniversityXi’an 710064China Northwest Institute for Non-ferrous Metal Research Xi’an 710016China State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals Lanzhou University of TechnologyLanzhou 730050China

The deformation behavior ofβ-quenched nearβTi-5321(Ti-5Al-3Mo-3V-2Cr-2Zr-1Nb-1Fe)alloy was systematically studied using in-situ tensile test monitored by the scanning electron microscopy(SEM).Besides,the electron backscatter diffraction(EBSD)was performed to thoroughly discuss the deformation *** results indicated that slip activities,crystal rotation and stress induced martensite transformation were the major deformation mechanisms in theβ-quenched Ti-5321 alloy during in-situ tensile *** slip activities were investigated by using the EBSD-trace analysis,which demonstrated that{110}<111>,{112}<111>and{123}<111>slip systems were activated and the{110}<111>slip system ***,βgrains rotated about 7.8°to accommodate the increased ***,the stress induced martensiteα″which was related to the double yielding behavior during tensile process exhibited multiple *** differentα″variants divided theβmatrix into smallerβblocks with a typical zigzag morphology,in which oneα″variant passed through another one by deflecting its initial growth ***,the deformation twinning in martensiteα″and slip bands cutting through martensiteα″effectively accommodated the local *** systematically analysis can provide insightful information about the deformation mechanisms in nearβtitanium alloys.

关键词： In-situ tensile test Slip activity Stress induced martensite Titanium alloys

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Boosting molecular diffusion following the generalized Murray's Law by constructing hierarchical zeolites for maximized catalytic activity

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国家科学评论（英文版） 2022年第12期9卷 143-156页

作者： Ming-Hui Sun Shu-Shu Gao Zhi-Yi Hu Tarek Barakat Zhan Liu Shen Yu Jia-Min Lyu Yu Li Shu-Tao Xu Li-Hua Chen Bao-Lian Su State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Laboratory of Inorganic Materials Chemistry(CMI) University of NamurNamur B-5000Belgium Division of Analysis Sinopec Beijing Research Institute of Chemical IndustryBeijing 100013China National Engineering Laboratory for Methanol to Olefins Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Nanostructure Research Centre Wuhan University of TechnologyWuhan 430070China Laboratory of Inorganic Materials Chemistry(CMI) University of NamurNamur B-5000Belgium State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China National Engineering Laboratory for Methanol to Olefins Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China

Diffusion is an extremely critical step in zeolite catalysis that determines the catalytic performance,in particular for the conversion of bulky *** interconnected mesopores and macropores into a single microporous zeolite with the rationalized pore size at each level is an effective strategy to suppress the diffusion limitations,but remains highly challenging due to the lack of rational design ***,we demonstrate the first example of boosting molecular diffusion by constructing hierarchical Murray zeolites with a highly ordered and fully interconnected macro-meso-microporous structure on the basis of the generalized Murray's *** a hierarchical Murray zeolite with a refined quantitative relationship between the pore size at each length scale exhibited 9 and 5 times higher effective diffusion rates,leading to 2.5 and 1.5 times higher catalytic performance in the bulky 1,3,5-triisopropylbenzene cracking reaction than those of microporous ZSM-5 and ZSM-5 nanocrystals,*** concept of hierarchical Murray zeolites with optimized structural features and their design principles could be applied to other catalytic reactions for maximized performance.

关键词： catalytic cracking generalized Murray's Law hierarchical Murray structure ordered porous hierarchy zeolites

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Tunable Atomic-Scale Steps and Cavities Break Both Stability and Activity Limits of CoO_(x) Nanosheets to Catalyze Oxygen Evolution

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Renewables 2023年第4期1卷 465-473页

作者： Min Yu Xueqin Mu Weitao Meng Ziyue Chen Yu Tong Yu Ge Shiyuan Pang Shengjie Li Suli Liu Shichun Mu Key Laboratory of Advanced Functional Materials of Nanjing Nanjing Xiaozhuang UniversityNanjing 211171 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070

A highly active interface can enhance the catalytic efficiency of catalysts toward the oxygen evolution reaction(OER).However,accurately tuning their atomic interface configurations of defects with sufficient activity and stability remains a grand ***,we report on breaking the activity and stability limits of CoO_(x) nanosheets in the OER process by constructing copious high-energy atomic steps and cavities,in which S or Ce atoms simultaneously replace O or Co atoms from CoO_(x),thus achieving high-energy atomic interface Ce,O-Co_(3)S_(4) *** combining in situ characterization and density functional theory calculations,it is shown that the unique orbital coupling between Ce-4f,O(S)-2p,and Co-3d causes it to be closer to the Fermi level,leading to faster charge transfer *** importantly,the novel structure breaks the stability limit of cobalt sulfide with planar defects,which gives high catalytic activity and stability in 0.1 M KOH solutions,better than commercial RuO_(2) and IrO_(2) noble metal *** expected,Ce,O-Co_(3)S_(4) possesses much better turnover frequency activity(0.064 s^(-1))at an overpotential of 300 mV,which is ~7 times larger than that of Ce-CoO_(x)(0.009 s^(-1)).Our work presents a new perspective of designing catalysts with atomically dispersed orbital electronic coupling defects toward efficient OER electrocatalysis.

关键词： atomic replacement amorphous structures interface active centers atomic defect oxygen evolution reaction

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Single-atom Fe Embedded Co_(3)S_(4) for Efficient Electrocatalytic Oxygen Evolution Reaction

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Chemical Research in Chinese Universities 2022年第5期38卷 1282-1286页

作者： QI Yuxue LI Tingting HU Yajie XIANG Jiahong SHAO Wenqian CHEN Wenhua MU Xueqin LIU Suli CHEN Changyun YU Min MU Shichun Key Laboratory of Advanced Functional Materials of Nanjing Nanjing Xiaozhuang UniversityNanjing 211171P.R.China Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037P.R.China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070P.R.China

Constructing atomically dispersed active sites with densely exposed and dispersed double metal-Sx catalytic sites for favorable OER catalytic activity remains rare and ***,we design and construct a Fe_(1)S_(x)@Co_(3)S_(4) electrocatalyst with Fe single atoms epitaxially confined in Co_(3)S_(4) nanosheets for catalyzing the sluggish alkaline oxygen evolution reaction(OER).Consequently,in ultralow concentration alkaline solutions(0.1 mol/L KOH),such a catalyst is highly active and robust for OER with low overpotentials of 300 and 333 mV at current densities of 10 and 30 mA/cm^(2),respectively,accompanying long-term stability without significant degradation even for 350 *** addition,Fe_(1)S_(x)@Co_(3)S_(4) shows a turnover frequency(TOF)value of 0.18 s−1,nearly three times that of Co_(3)S_(4)(0.07 s−1),suggesting the higher atomic utilization of Fe single atoms.Mössbauer and in-situ Raman spectra confirm that the OER activity of Fe_(1)S_(x)@Co_(3)S_(4) origins from a thin catalytic layer of Co(Fe)OOH that interacts with trace-level Fe species in the electrolyte,creating dynamically stable active *** with experimental characterizations,it suggests that the most active S-coordinated dual-metal site configurations are 2S-bridged(Fe-Co)S4,in which Co-S and Fe-S moieties are shared with two S atoms,which can strongly regulate the adsorption energy of reaction intermediates,accelerating the OER reaction kinetics.

关键词： Electrocatalyst Dual-metal site S coordination Fe single atom Oxygen evolution reaction

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